A, wax injection device
Wax injection jewelry equipment including vacuum wax injection machine and pneumatic wax injection machine, using air pump pressure, make the wax liquid fillingrubber mold cavity. Lost wax casting production is an important working procedure in the wax, the quality has an important impact on the jewelry products. The widespread use of early is a simple pneumatic wax injection machine, wax quality is relativelydifficult to guarantee, especially fine wax to forming. In twentieth Century 80 yearsafter the vacuum wax injection machine, injection wax before evacuating the rubber mold, the wax is in a vacuum state betting wax, the filling performance is optimized,therefore, can obtain relatively thin wax pattern, improve the filling ability of wax. 90 years after the development of vacuum wax injector higher degree of automation,such as digital vacuum wax injection system produced by Yasui company in Japan,with two wax injection system to minimize the shrinkage of wax, wax injection parametercan be any combination of. The rubber mold into the mold clamping manipulator, inputthe program, press the "start" button, it can automatically complete the whole process.The device to control the temperature, wax injection effect is perfect.
Wax injection mold of previous to the rubber mold, has the certain thickness requirements. In recent years, the metal film on the part of the structure, making wax pattern is very thin, almost transparent, stability and the weight, size is very good,suitable for batch piece structure simple.
Two, open the powder equipment
Simple is easy to make slurry mixer is widely used in gas, the powder process to go through multi-channel processes, complex. 90 years after the vacuum automaticpowder stirring machine, it sets the mixers and vacuum sealing device in a body, can complete the whole process from stirring casting powder to filling forming under vacuum state, effectively reduce the bubble, the smoothness and better products.Vacuum powder stirring machine generally has a quantitative water and stirring timeand speed setting function, improve the degree of Automation Open powder, simple operation, time saving.
Three, baking furnace
Jewelry industry gypsum calcination furnace used mostly by resistance furnace, is generally three surface heating, uneven temperature distribution in the furnace,roasting time is not easy to adjust the furnace atmosphere. In order to achieveuniform distribution of wax residue and automation control, eliminate the target temperature furnace, in recent years the continuous development of some advancedroasting furnace. For example, Italy’s Schultheiss company developed a new type offurnace, heat resistant steel is arranged in the heating element and plaster, fan is installed on the roof, forced air flows through the heating element and returns from the bottom of furnace, which forced air flow in the furnace, improves the thermal insulation of the furnace shell can. Germany developed a roasting furnace more advanced, the hearth rotary mode, the plaster is heated evenly, smooth, fine plaster,particularly in the advanced wax casting process requirements. The furnace boxsurrounded by heating, there are double brick partition, temperature uniformity and stability, good insulation performance, after two times after the full combustion,exhaust gas is pollution-free, have a negative impact on the environment will not. At present, many countries in the production of such a roasting furnace.
Four, casting machine
Casting machine is very important jewelry in investment casting equipment, is to ensure that an important condition for the quality of the products. Because the jewelry products are fine, the liquid metal in the casting process can quickly solidified and the loss of liquidity, therefore, gravity casting routine to ensure its forming, we must introduce some external force, to promote its rapid filling cavity, in order to obtain theworkpiece shape integrity, a clear outline. According to the external form, commonly used for jewelry casting machine mainly centrifugal and static casting machine two